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The sum of two vectors A and B is at rig...

The sum of two vectors A and B is at right angles to their difference. Then

A

A=B

B

A=2B

C

B=2A

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
(a) R.S=(A+B)(A-B)
`=A.A-A.B+B.A-B.B`
`or0=A^(2)-B^(2) (as A.B=B.A)`
`therefore A^(2)=B^(2)or A=B`
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